Coating composition



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To all whom it may concern:

Be it known that l, ALBERT C. l lonzsrsse, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Costing Compositions, of which the following is n specification.

This invention relates to surface coating compositions, and more particularly to paints containing steerine pitch, or pitch derived from the treatment of similar oils and fats.

An object of the invention is the provision of s. point having in improved app-eerence, and increased power of resistance.

in a. prior Patent lie. l,3?9,0l8, granted to me under date of May 2 1921, ll hove described and claimed e suriece costing composition consisting of pitch derived from the treatment of oils and "lets, o l, it pigment, and e paint oil. other patents, l have described end claimed oth r compositions of this cherscter in which pi derived from the treatment of oils end is ineteriel ingredient. l have found the eddition of a smell quantity of solntiori of rubher, or similar gums, produces e. paint having an improved appearance else increases the resisting power of the point. While the proportion of rubber employed mey be varied Within Wide limits, l have found that the addition of s rubber solution containing about .5 to 1 per cent. of rubber by Weight of the total content of the point is most suiteble. In addition to rubber, cumsrone resin which is e. synthetic gum, or cun'isrin gum which is a composition of similsr nature, may be employed. Y

'The composition of the point to which the rubber solution is added may very Within wide limits but es en exemple, the composition disclosed in my Potent No. 1,379,018 consisting oi from to 4:0 pertshy Weight of steerine pitch or the residue derived from the treatment of similar oils end fists, to or 7(l psrts by Wei ht ofter oih'such es s distillate of ter on or petroleum spirit of from to flesh point, or other hydrocsrbon solvent otlthe mey he eni- Application tiled Ilene 15,

1922. Serial No. fidiifi d.

ployed. A suitable pigment is, of course, incorporated with this materiel, preferably the proportions of it) to 30 parts by weight, and a small proportion of linseed oil or other point oil may be added. in place of pert oi the steerine pitch, cumer gum they be used.

The rubber is added to thesteerine pitch and cuinerone resin varnish during the procsee of manufacture. of irubher added may very Within wide limits, l find that the addition of about t to l per cent. of rubber by Weight of the total content of the paint is preferable. In addition to rubbergverious other gums may be employed, and l find that cumsrone resin is very suitable for this purpose. in producing light shades of point made on the bases of e varnish containing at substantial proportion of steerine pitch or other pitch derived from the treatment of oils and lists, 1 find en oxide of antimony may be used in While the proportion place of titanium oxide or other pigment,

end they be added in substantially the some proportions as the proportion of such pignients. v

While ll hove described in detail the proiferred practice of my process, it 18 to be A. .4 A. g I; understood that the deteils oi procedure, and

proportions oi ingredients may be Widely varied, and that known chemical equivalents may be employed in place of the materials mentioned, without departing from the spirit oi'the invention or the scope of the subjoined cleims.

Having thus described my invention, It clsim:

l. A surface costing composition comprising steerine pitch, a. solvent therefor, and

substsntielly l per cent. of rubber.

9;. A surface costing composition comprising pitch derivedfrom the treatment of oils end lets, e solvent for said pitch, and from 1% to 2 per cent. by Weight or" rubber.

in testimony whereof, I afix my signature in presence or two Witnesses.

ALBERT C. HULZAPFEL.

"Witnesses: 

